Which paper tape hole is bit 1?
Pete Turnbull
pete at dunnington.plus.com
Sat Nov 19 09:15:00 CST 2005
On Nov 19 2005, 9:50, Barry Watzman wrote:
> I have a chart of paper tape hole patterns for all 128 characters,
and it
> shows the LSB (bit zero, although the chart numbers them 1-8) as the
edge
> hole on the 3-hole side, with the bits in order 0 to 7 (or 1 to 8).
>
> However, one question, this chart shows the high-order bit (parity
bit)
> punched for every character, no exceptions. Was that a standard
convention
> in sending ascii files to paper tape?
It was for DEC, at least with PDP-8s. I don't know about anyone else.
--
Pete Peter Turnbull
Network Manager
University of York
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